Umbrella supporting device



FIG. 1 is a front elevational view of an umbrella supporting device showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a partially enlarged view of FIG. 1;

FIG. 8 is a partially enlarged view of FIG. 2;

FIG. 9 is a partially enlarged view of FIG. 3;

FIG. 10 is a partially enlarged view of FIG. 4;

FIG. 11 is a partially enlarged view of FIG. 6; and,

FIG. 12 is a partially enlarged top plan view of FIG. 1. 

The ornamental design for a umbrella supporting device, as shown and described. 